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Abstract
This study evaluated high spatial resolution colour‐infrared (CIR) (2.44 m) and pansharpened CIR imagery (0.61 m) for detecting citrus (Citrus spp.) orchards affected by sooty mould (Capnodium citri), an indicator of insect infestation of a citrus grove. These resolutions were chosen because they are equivalent to the spatial resolution of multispectral and pansharpened QuickBird imagery. Citrus groves north‐west of Mission, Texas, USA, were assessed. CIR photography and image processing software were used to develop the images. Sooty mould‐affected areas were readily detected on the CIR and pansharpened CIR images. The latter provided better detail, increasing image interpretation accuracy. Findings of this study support the theory that high spatial resolution satellite imagery may be used to detect sooty mould‐affected citrus orchards.
Acknowledgments
The author thanks Rene Davis and Fred Gomez for their assistance in this study, and Dr Barret Rock, Dr Barry Haack and the two anonymous reviewers for their critical reviews of this manuscript.
Notes
†Mention of trade names or commercial products in this article is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the US Department of Agriculture.